Crc 1004799 Rtv Silicone Elastic Sealant 8 Oz Black

Product Description

The CRC 1004799 is a black RTV silicone elastic sealant designed for forming durable, flexible seals in a wide range of trade and industrial applications. Packaged in an 8 oz tube for easy direct application, this sealant cures at room temperature within 24 hours and maintains performance from -30 degrees F up to 450 degrees F. It is used by HVAC technicians, electricians, plumbers, and automotive professionals who need a reliable, moisture-resistant sealant for joints, gaskets, vents, and electrical enclosures. The flexible cured bead resists cracking and vibration over repeated thermal cycles.

This RTV silicone sealant is suited for residential and commercial applications where a flexible, long-lasting seal is required. Common uses include automotive gasket forming, electrical junction sealing, HVAC vent connections, insulating applications, and wall joint sealing. It is well suited for any trade scenario where temperature extremes, moisture exposure, or mechanical vibration would compromise a rigid sealant. The 8 oz tube format allows controlled dispensing without a caulking gun, making it convenient for service calls and bench repairs.

Key Features

• Operating temperature range: -30 degrees F to 450 degrees F for high-heat environments
• Full room-temperature cure in 24 hours — no oven or UV curing required
• Black color suits gasket and automotive applications where appearance matters
• 8 oz tube format allows direct application without additional tooling
• Flexible cured bead resists cracking under vibration and thermal cycling
• Meets ASTM C-920, TT-S-001543A Class A, and TT-S-00230C Class A standards

Compatibility

Designed for use in automotive, electrical, gasket, insulating, vent, and wall joint applications where an RTV silicone elastic sealant is specified. Suitable for metal, glass, and most rigid substrates common in HVAC, plumbing, and electrical trade work.

Installation Notes

Surface must be clean, dry, and free of oil or loose material before application. Apply a continuous bead and allow a full 24-hour cure before exposing the joint to fluids or mechanical stress. Electricians and HVAC technicians should verify that the sealant is fully cured before restoring power or airflow to the sealed assembly. Work in a well-ventilated area during application, as acetic acid vapors are released during cure.